问题描述：
新概念中的过去完成时态问题
before she had anchored,the men from the boats had climed on board!
before 后面为什么用had?是不是用一般过去时也可以?
many of the tourists on board had begun bargaining with the trademen,but i decided not to buy anything until i had disembarked
until 后面为什么用had啊?disembark不是发生在decided后面么?
before she had anchored,the men from the boats had climed on board!
before 后面为什么用had?是不是用一般过去时也可以?
many of the tourists on board had begun bargaining with the trademen,but i decided not to buy anything until i had disembarked
until 后面为什么用had啊?disembark不是发生在decided后面么?
问题解答：
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